US3637159A - Automatic carrier box latch of reduced dimensions - Google Patents

Automatic carrier box latch of reduced dimensions Download PDF

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Publication number
US3637159A
US3637159A US860308A US3637159DA US3637159A US 3637159 A US3637159 A US 3637159A US 860308 A US860308 A US 860308A US 3637159D A US3637159D A US 3637159DA US 3637159 A US3637159 A US 3637159A
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US
United States
Prior art keywords
drum
pin
box
spring
shells
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US860308A
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English (en)
Inventor
Luigi Caramella
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Individual
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Individual
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Publication date
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Publication of US3637159A publication Critical patent/US3637159A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/14—Adjustable mountings
    • F21V21/16—Adjustable mountings using wires or cords
    • F21V21/18—Adjustable mountings using wires or cords operated by springs

Definitions

  • An automatic latch device for suspended bodies comprising: a spherical segment-shaped box symmetrical about a plane passing through the center, the two shells comprising said box meeting on said plane and, in addition to being effective as containers, said shells being internally shaped so as to form a seating for members comprising the mechanism and forming part of said members as well.
  • a cylindrical cup drum Inside the shell is a cylindrical cup drum, the carrying cable being externally wound thereon, for internally containing a coil spring, a disc having a central pin adhering to said spring, and a clutch plate where-in suitable seatings are formed for the clamping members with said drum.
  • a pin fast with the rear shell has a diametrical slit for coupling the inner end of the spring about which said drum idling rotates, as well as a transverse pin for deviating said carrying cable.
  • a screw with a resilient washer is arranged and screws down in the pin of the disc adjacent said clutch plate; and a suitably shaped element is also provided for anchoring at the bottom both said carrying cable and the helical driving cable.
  • the dimensions and compact form thereof allow the use of concealment decorative closure plates, the overall size of which is not larger than that of common decorative closure plates as used for electric light pendants not fitted with latch means. Therefore, the use of the automatic means according to the present invention will not lead to any adverse result from an aesthetical standpoint.
  • the members comprising the mechanism have been reduced to the smallest possible size, giving such forms and shapes thereto as to allow for a correct operation of the device notwithstanding the reduced dimensions thereof.
  • the symmetrical shell shape of the box substantially facilitates the latch-assembling operations and the inner walls thereof form integrating parts of the device in addition to being effective as seatings for the other members.
  • clutch disc or plate which, by using three suitably proportioned rollers assures the mechanism operation notwithstanding the restricted dimensions of the drum wherein said clutch plate is inserted.
  • the present invention also comprises, as an integrating part thereof, the joint terminal for the helical cable to the overhung body, the particular shape of which facilitates the coupling thereof and prevents the helical cable from coming out of the sleeve.
  • the device comprises two shells almost equal and symmetrical to the vertical matching plane and which, besides containing the other mechanism components, are internally shaped so as to form a part ofthe mechanism.
  • a cylindrical cup drum is mounted on the external periphery of which is wound the carrying cable and the cup is adapted to hold a coil return spring, a disc fast with the central pin and a shaped clamping member with three stop rollers.
  • the braking action is provided by the friction developing on the outer sides of the clamping member as a result of the pressure being exerted on one side by the disc fast with the pin and on the other side by a suitable washer.
  • This clamping member is adjustable by tightening or unloosening a screw on the shell outside and the stem of which is screw threaded within the pin provided with said disc.
  • FIG. 1 is a front view ofthe device
  • FIG. 2 shows the device in FIG. 1 as rotated through 90
  • FIG. 3 shows the shell in FIG. I as seen from the inside with the lower associated elements removed;
  • FIG. 4 shows the rear shell with the inner elements
  • FIG. 5 is a sectional exploded view showing all the elements comprising the device
  • FIG. 6 is a view showing the coupling-shaped member for the helical cable at its lower end.
  • FIG. 7 is a top view ofFIG. 6.
  • box 8 is in the form of a segment of a sphere symmetrical to the plane passing through the center, the two shells 9 and 9 comprising the box meeting on said plane and being kept together by an upper screw 10 located sidewise of the slot II for hanging the device to the ceiling, the slot being formed with two flanges l2 projecting at the top from said two shells 9 and 9', at the bottom having a threaded cylindrical extension 113, on which the knurled ring 141 is screwed, holding the decorative closure plate (not shown) and beneath it the cylindrical sleeve 15, the helical driving cable (not shown) leading therefrom.
  • the latter two elements complete the closure for box 3.
  • shell 9 has an annular groove 16 concentric with the central square hole 117 externally associated with the cylindrical seating 18 for accommodating the resilient washer l9 and screw 20.
  • an axial through hole M is provided as formed by two semicylindrical grooves 21, one in each shell, and two cylindrical seatings 22 displaced to the right of the vertical axis (as seen in FIG. 4) for accommodating, when assembling, the cylindrical pin 23 about which the carrier wire 24) departs from the axis of hole 21.
  • the extension halves 13 On the opposite side to seatings 22, the extension halves 13 have two millings 25 involving the entire extension up to the box curve; by bringing the two millings together, the passage is provided (FIG. 2) for the driving cable (not shown).
  • shell 9 has, in addition to the above-mentioned details, a cylindrical seating 26 coaxial with the central pin 27, the pin 27 being integral with the shell and having a diametrical slit 27
  • the cup drum 28 has a flanged hole 28' for receiving said pin 27, whereby drum 28 is accommodated within seating 26.
  • the carrying cable 2% is coiled over the external periphery of the drum, while internally the outer end of the coil spring 29 is attached, the inner end 29' of said spring being adapted to be inserted into the slit 27' and hence to be secured to pin 27.
  • Disc 30 is adjacent said spring and provided with a pin 31 having acoaxial threaded hole 32.
  • the end portion of said pin is of a square cross section and fits in the square hole 17 in shell 9.
  • the clutch plate 33 is adjacent said disc 30 and adapted for idling movement on pin 31 and has the shape shown in FIG. 4.
  • This clutch plate 33 has three suitably shaped seatings M accommodating the springs 35 and rollers 36 which in their inoperative condition bear tangentially against the inner periphery of the drum.
  • the rollers offer no resistance due to the convenient slope of the seating, while when tending to rotate clockwise, the rollers will lock the drum and make it fast with disc 33. Therefore, at the traction step for cable 24 the friction provided by tightening said screw 20 must be overcome.
  • the clutch plate 33 rotates between disc 30 and washer 37, while the resilient washer I9 is also stressed.
  • the mechanism of box 8 is completed by tube 38 having curved end flanges and which is inserted into the two grooves 21', to facilitate the slidingof cable 24.
  • an anchoring member of the helical driving cable and carrying cable as shown in FIGS. 6 and 7.
  • This member 39 is screwed in a sleeve 15' equivalent to the upper sleeve 15 and, in turn, having at the bottom a coaxial hole 40 for screwing to the electric light pendant or the like and for the passage of the driving cable, said hole mating with the central slot M in the member and connected with a helical toric groove 42 which is necessarily very deep at the connection area with said slot 41 and reducing to zero as it reaches the top by going about the member.
  • Member 39 also has an axial hole M, the lower end of the carrying cable 24 passing therethrough and being knotted for fastening to the inside of slot 41.
  • This particular shape for member 39 aids in connecting the conduct cable end, preventing it from coming out of the sleeve.
  • An automatic latch device for suspended electric lights comprising a circular box divided into two mating shells, a hollow cylindrical drum disposed in said box, a coil torsion spring disposed in said drum, one end of said spring being secured to one of said shells, the other end of said spring being secured to said drum, a carrying cable for an electric light wound about said drum and extending from the lower end of said box, a disc having a central pin disposed in said drum next to said spring, a clutch plate disposed in said drum next to said disc on the side opposite said spring and surrounding said pin, said clutch plate having members thereon engageable with the interior of said drum to permit rotation of said drum relative to said clutch plate in one direction and to prevent rotation of said drum relative to said clutch plate in the other direction, a screw extending through the other of said shells and screwthreadedly received within an axial hole in said pin, and a resilient washer between said screw and said other shell whereby upon tightening said screw against the action of said resilient washer, the force is varied which must be exerted in order to un
  • a device as claimed in claim 1 and a pin secured to said one shell and having a diametrical slit therethrough, said one end of said spring being disposed in said slit.
  • a device as claimed in claim 1 and a pin parallel to the axis of said drum and carried between said shells adjacent the lower end of said box, said carrying cable extending from said drum about a portion of the periphery of the last-mentioned pin and then downwardly to a said electric light.
  • said box having a flat upward extension having a central hole therethrough for suspending said box and a threaded hole beside said central hole for receiving a screw to secure together said shells.
  • a device as claimed in claim 1 said box at the bottom having a cylindrical extension externally screw threaded and having an axial hole therethrough for said carrying cable, said shells together defining between them the last-mentioned axial hole.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Cultivation Receptacles Or Flower-Pots, Or Pots For Seedlings (AREA)
  • Mechanical Operated Clutches (AREA)
US860308A 1968-12-12 1969-09-23 Automatic carrier box latch of reduced dimensions Expired - Lifetime US3637159A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2496868 1968-12-12

Publications (1)

Publication Number Publication Date
US3637159A true US3637159A (en) 1972-01-25

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ID=11215288

Family Applications (1)

Application Number Title Priority Date Filing Date
US860308A Expired - Lifetime US3637159A (en) 1968-12-12 1969-09-23 Automatic carrier box latch of reduced dimensions

Country Status (4)

Country Link
US (1) US3637159A (de)
BR (1) BR6914984D0 (de)
ES (1) ES153924Y (de)
FR (1) FR2025969A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5618249A (en) * 1995-06-07 1997-04-08 Marshall; David R. Unidirectionally adjustably resistant recoilers and portable exercise devices
CN103183260A (zh) * 2011-12-28 2013-07-03 富泰华工业（深圳）有限公司 容置装置
US20180092333A1 (en) * 2016-10-05 2018-04-05 Kyle Skinner Animal Tethering Assembly
US10145543B1 (en) * 2017-08-31 2018-12-04 Sinowell (Shanghai) Co., Ltd. Device for adjusting height of suspended lamp

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1166736B (it) * 1979-04-11 1987-05-06 Aromec Srl Dispositivo saliscendi perfezionato per lampade a sospensione
DE4401342C2 (de) * 1994-01-18 1996-06-20 Halloform Gmbh & Co Kg Gelenk in einer Befestigungseinrichtung, mit der ein Schwenkleuchtenarm an einem Befestigungssockel drehbar befestigt ist

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US670949A (en) * 1900-09-12 1901-04-02 Frank W Morse Adjuster for incandescent electric lamps.
DE525106C (de) * 1931-05-20 Theodor Mueller & Co G M B H Tragseilaufwickelvorrichtung fuer elektrische Zugkronen
AT168962B (de) * 1950-06-22 1951-09-25 Doppelmayr & Sohn Schleppseilfördereinrichtung mit einer Mitnahmebremse
US2632609A (en) * 1951-05-12 1953-03-24 Kirby John Fishing line leader reel
US2637109A (en) * 1951-01-08 1953-05-05 Willis William Lee Sight string
US2794607A (en) * 1954-12-13 1957-06-04 Robboy Nathan Tension reel for lighting fixture
AT201103B (de) * 1957-10-09 1958-12-10 Josef Burger Schleppseilgehänge für Schleppseilförderanlagen, insbesondere Skilifte

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE525106C (de) * 1931-05-20 Theodor Mueller & Co G M B H Tragseilaufwickelvorrichtung fuer elektrische Zugkronen
US670949A (en) * 1900-09-12 1901-04-02 Frank W Morse Adjuster for incandescent electric lamps.
AT168962B (de) * 1950-06-22 1951-09-25 Doppelmayr & Sohn Schleppseilfördereinrichtung mit einer Mitnahmebremse
US2637109A (en) * 1951-01-08 1953-05-05 Willis William Lee Sight string
US2632609A (en) * 1951-05-12 1953-03-24 Kirby John Fishing line leader reel
US2794607A (en) * 1954-12-13 1957-06-04 Robboy Nathan Tension reel for lighting fixture
AT201103B (de) * 1957-10-09 1958-12-10 Josef Burger Schleppseilgehänge für Schleppseilförderanlagen, insbesondere Skilifte

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5618249A (en) * 1995-06-07 1997-04-08 Marshall; David R. Unidirectionally adjustably resistant recoilers and portable exercise devices
CN103183260A (zh) * 2011-12-28 2013-07-03 富泰华工业（深圳）有限公司 容置装置
US20180092333A1 (en) * 2016-10-05 2018-04-05 Kyle Skinner Animal Tethering Assembly
US10485222B2 (en) * 2016-10-05 2019-11-26 Kyle Skinner Animal tethering assembly
US10145543B1 (en) * 2017-08-31 2018-12-04 Sinowell (Shanghai) Co., Ltd. Device for adjusting height of suspended lamp

Also Published As

Publication number Publication date
DE1956962B2 (de) 1972-07-20
FR2025969A1 (de) 1970-09-11
ES153924Y (es) 1970-12-01
ES153924U (es) 1970-02-01
DE1956962A1 (de) 1970-07-09
BR6914984D0 (pt) 1973-02-20

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